I've long thought that though there are more sets per body part on a split, even though there are generally 3 sets with the fullbody the weight lifted by each muscle group is relative to its size and strength and that's the simplicity of the fullbody; so, you'll still lift more in terms of load, for a bigger muscle group...and the beauty of it is that you can still walk the day after so cardio does not get negatively affected either.